<template>
	<view class="preview">
		<swiper circular :current="currentIndex" @change="swiperChange">
			<swiper-item v-for="(item, index) in classList" :key="item._id">
				<image v-if="readImages.includes(index)" @click="maskChange" :src="item.picurl" mode="aspectFill"></image>
			</swiper-item>
		</swiper>
		<view class="mask" v-show="maskState">
			<view class="goBack" :style="{ top: getStatusBarHeight() + getInstance() + 'px' }" @click="goBack">
				<uni-icons type="back" size="20" color="#fff"></uni-icons>
			</view>
			<view class="count">
				{{ currentIndex + 1 }} / {{classList.length}}
			</view>
			<view class="time">
				<uni-dateformat :date="Date.now()" format="hh:mm"></uni-dateformat>
			</view>
			<view class="date">
				<uni-dateformat :date="Date.now()" format="MM月dd日"></uni-dateformat>
			</view>
			<view class="footer">
				<view class="box" @click="clickInfo">
					<uni-icons type="info" size="23"></uni-icons>
					<text class="text">信息</text>
				</view>
				<view class="box" @click="clickScore">
					<uni-icons type="star" size="23"></uni-icons>
					<text class="text">{{currentInfo.score}}分</text>
				</view>
				<view class="box" @click="clickDownload">
					<uni-icons type="download" size="23"></uni-icons>
					<text class="text">下载</text>
				</view>
			</view>
		</view>
		<uni-popup ref="infoPopup" type="bottom" :safe-area="false">
			<view class="infoPopup">
				<view class="popHeader">
					<view></view>
					<view class="title">壁纸信息</view>
					<view class="close" @click="clickInfoClose">
						<uni-icons type="closeempty" size="18" color="#999"></uni-icons>
					</view>
				</view>
				<scroll-view scroll-y>
					<view class="content">
						<view class="row">
							<view class="label">壁纸ID：</view>
							<text selectable class="value">{{ currentInfo._id }}</text>
						</view>
						<view class="row">
							<view class="label">发布者：</view>
							<text class="value">{{ currentInfo.nickname }}</text>
						</view>
		
						<view class="row">
							<text class="label">评分：</text>
							<view class='value roteBox'>
								<uni-rate readonly touchable :value="currentInfo.score" size="16" />
								<text class="score">{{ currentInfo.score }}分</text>
							</view>
						</view>
		
						<view class="row">
							<text class="label">摘要：</text>
							<view class='value'>
								{{ currentInfo.description }}
							</view>
						</view>
		
						<view class="row">
							<text class="label">标签：</text>
							<view class='value tabs'>
								<view class="tab" v-for="tab in currentInfo.tabs" :key="tab">
									{{ tab }}
								</view>
							</view>
						</view>
		
						<view class="copyright">
							声明：本图片来用户投稿，非商业使用，用于免费学习交流，如侵犯了您的权益，您可以拷贝壁纸ID举报至平台，邮箱513894357@qq.com，管理将删除侵权壁纸，维护您的权益。
						</view>
						
						<view class="safe-area-inset-bottom"></view>
					</view>
				</scroll-view>
			</view>
		</uni-popup>
		<uni-popup ref="scorePopup" :is-mask-click="false">
			<view class="scorePopup">
				<view class="popHeader">
					<view></view>
					<view class="title">{{ isScore ? '已经评过分了~' : '壁纸评分' }}</view>
					<view class="close" @click="clickScoreClose">
						<uni-icons type="closeempty" size="18" color="#999"></uni-icons>
					</view>
				</view>
		
				<view class="content">
					<uni-rate v-model="userScore" allowHalf disabled-color="#FFCA3E" :disabled="isScore"/>
					<text class="text">{{userScore}}分</text>
				</view>
		
				<view class="footer">
					<button @click="submitScore" :disabled="!userScore || isScore" type="default" size="mini"
						plain>确认评分</button>
				</view>
			</view>
		</uni-popup>
	</view>
</template>

<script setup>
import { ref } from 'vue'
import {getStatusBarHeight, getInstance} from '@/utils/system.js'
import { onLoad, onUnload, onShareAppMessage, onShareTimeline } from '@dcloudio/uni-app'
import { setupScoreApi, writeDownloadWallApi, detailWallApi } from '@/api/apis.js'

const maskState = ref(true)
const infoPopup = ref(null)
const scorePopup = ref(null)
const userScore = ref(0)
const classList = ref([])
const currentId = ref(null)
const currentIndex = ref(0)
const currentInfo = ref({})
const isScore = ref(false)
// 性能优化  初始只加载当前索引和其左右两张图片
const readImages = ref([])

const storageClassList = uni.getStorageSync('classList') || []
classList.value = storageClassList.map(item => {
	return {
		...item,
		picurl: item.smallPicurl.replace("_small.webp", ".jpg")
	}
})

onLoad(async (e) => {
	currentId.value = e.id
	if(e.type == 'share') {
		let res = await detailWallApi({
			id: currentId.value
		})
		classList.value = res.data.map(item => {
			return {
				...item,
				picurl: item.smallPicurl.replace("_small.webp", ".jpg")
			}
		})
	}
	currentIndex.value = classList.value.findIndex(item => item._id === currentId.value)
	currentInfo.value = classList.value[currentIndex.value]
	readImagesFun()
})

// onUnload(() => {
// 	uni.removeStorageSync("classList")
// })

const swiperChange = (e) => {
	currentIndex.value = e.detail.current
	currentInfo.value = classList.value[currentIndex.value]
	readImagesFun()
}

// 预加载图片 性能优化
const readImagesFun = () => {
	readImages.value.push(
		currentIndex.value <=0 ? classList.value.length - 1 : currentIndex.value - 1,
		currentIndex.value,
		currentIndex.value >= classList.value.length ? 0 : currentIndex.value + 1
	)
	readImages.value = [...new Set(readImages.value)]
}

const maskChange = () => {
	maskState.value = !maskState.value
}

//点击info弹窗
const clickInfo = () => {
	infoPopup.value.open();
}

//点击关闭信息弹窗
const clickInfoClose = () => {
	infoPopup.value.close();
}

//评分弹窗
const clickScore = () => {
	if(currentInfo.value.userScore) {
		isScore.value = true
		userScore.value = currentInfo.value.userScore
	}
	scorePopup.value.open();
}
//关闭评分框
const clickScoreClose = () => {
	scorePopup.value.close();
	userScore.value = 0
}

//确认评分
const submitScore = async () => {
	const { classid, _id: wallId } = currentInfo.value
	const res = await setupScoreApi({
		classid,
		wallId,
		userScore: userScore.value
	})
	if(res.errCode === 0) {
		uni.showToast({
			title: "评分成功",
			icon:'none'
		})
		currentInfo.value.userScore = userScore.value
		uni.setStorageSync("classList", classList.value)
		clickScoreClose()
	}
}

const clickDownload = async () => {
	// #ifdef H5
		uni.showModal({
			content: "长按图片下载",
			showCancel: false
		})
	// #endif
	// #ifndef H5
		try {
			uni.showLoading({
				title: "下载中..."
			})
			const { classid, _id: wallId } = currentInfo.value
			const res = await writeDownloadWallApi({
				classid, 
				wallId
			})
			if(res.errCode != 0) throw res;
			
			uni.getImageInfo({
				src: currentInfo.value.picurl,
				success: (res) => {
					uni.saveImageToPhotosAlbum({
						filePath: res.path,
						success: (res) => {
							uni.showToast({
								title: "保存成功,请到相册查看",
								icon: "none"
							})
						},
						fail: (err) => {
							console.log(err)
							if(err.errMsg == "saveImageToPhotosAlbum:fail auth deny") {
								uni.showModal({
									title: "授权提示",
									content: "需要授权保存相册",
									success: (res) => {
										if(res.confirm) {
											uni.openSetting({
												success: (settting) => {
													console.log(settting)
													if(settting.authSetting['scope.writePhotosAlbum']) {
														uni.showToast({
															title: "获取授权成功",
															icon: "none"
														})
													} else {
														uni.showToast({
															title: "获取授权失败",
															icon: "none"
														})
													}
												}
											})
										}
									}
								})
							} else {
								uni.showToast({
									title: '保存失败，请重新点击下载',
									icon: "none"
								})
							}
						},
						complete: () => {
							uni.hideLoading()
						}
					})
				}
			})
		}catch(err) {
			uni.hideLoading()
		}
		
	// #endif
}

// 分享给好友
onShareAppMessage(() => {
	return {
		title: '咸虾米壁纸',
		path: '/pages/preview/preview?id=' + currentId.value + '&type=share',
	}
})

// 分享给朋友圈
onShareTimeline(() => {
	return {
		title: '咸虾米壁纸',
		query: 'id=' + currentId.value + '&type=share'
	}
})

const goBack = () => {
	uni.navigateBack({
		success: () => {
			
		},
		fail: () => {
			// 分享进来的返回首页
			uni.reLaunch({
				url: "/pages/index/index"
			})
		}
	})
}
</script>

<style lang="scss" scoped>
.preview {
	width: 100%;
	height: 100vh;
	position: relative;
	swiper {
		width: 100%;
		height: 100%;
		&-item {
			width: 100%;
			height: 100%;
			image {
				width: 100%;
				height: 100%;
			}
		}
	}
	.mask {
		color: #fff;
		&>view {
			position: absolute;
			width: fit-content;
			left: 0;
			right: 0;
			margin: auto;
		}
		.goBack {
			width: 38px;
			height: 38px;
			background-color: rgba(0, 0, 0, 0.5);
			top: 0;
			left: 30rpx;
			border-radius: 100rpx;
			backdrop-filter: blur(10rpx);
			border: 1rpx solid rgba(255, 255, 255, 0.3);
			display: flex;
			align-items: center;
			justify-content: center;
			margin-left: 0;
		}
		.count {
			top: 10vh;
			padding: 8rpx 28rpx;
			background-color: rgba(0, 0, 0, 0.3);
			border-radius: 40rpx;
			backdrop-filter: blur(10rpx);
		}
		.time {
			top: calc(10vh + 80rpx);
			font-size: 140rpx;
			font-weight: 100;
			line-height: 1em;
			text-shadow: 0 4rpx rgba(0, 0, 0, 0.3);
		}
		.date {
			top: calc(10vh + 230rpx);
			font-size: 34rpx;
			text-shadow: 0 4rpx rgba(0, 0, 0, 0.3);
		}
		.footer {
			background-color: rgba(255, 255, 255, 0.8);
			bottom: 10vh;
			width: 65vw;
			height: 120rpx;
			color: #000;
			border-radius: 120rpx;
			display: flex;
			justify-content: space-around;
			align-items: center;
			box-shadow: 0 2rpx 0 rgba(0, 0, 0, 0.1);
			backdrop-filter: blur(20rpx);
			.box {
				display: flex;
				flex-direction: column;
				align-items: center;
				justify-content: center;
				padding: 2rpx 12rpx;
				.text {
					font-size: 26rpx;
					color: $text-font-color-2;
				}
			}
		}
	}
	.popHeader {
		display: flex;
		justify-content: space-between;
		align-items: center;
	
		.title {
			color: $text-font-color-2;
			font-size: 26rpx;
		}
	
		.close {
			padding: 6rpx;
		}
	}
	.infoPopup {
		background: #fff;
		padding: 30rpx;
		border-radius: 30rpx 30rpx 0 0;
		overflow: hidden;
	
		scroll-view {
			max-height: 60vh;
	
			.content {
				.row {
					display: flex;
					padding: 16rpx 0;
					font-size: 32rpx;
					line-height: 1.7em;
	
					.label {
						color: $text-font-color-3;
						width: 140rpx;
						text-align: right;
						font-size: 30rpx;
					}
	
					.value {
						flex: 1;
						width: 0;
					}
	
					.roteBox {
						display: flex;
						align-items: center;
	
						.score {
							font-size: 26rpx;
							color: $text-font-color-2;
							padding-left: 10rpx;
						}
					}
	
					.tabs {
						display: flex;
						flex-wrap: wrap;
	
						.tab {
							border: 1px solid $brand-theme-color;
							color: $brand-theme-color;
							font-size: 22rpx;
							padding: 10rpx 30rpx;
							border-radius: 40rpx;
							line-height: 1em;
							margin: 0 10rpx 10rpx 0;
						}
					}
	
					.class {
						color: $brand-theme-color;
					}
	
	
				}
	
				.copyright {
					font-size: 28rpx;
					padding: 20rpx;
					background: #F6F6F6;
					color: #666;
					border-radius: 10rpx;
					margin: 20rpx 0;
					line-height: 1.6em;
				}
	
			}
		}
	}
	.scorePopup {
		background: #fff;
		padding: 30rpx;
		width: 70vw;
		border-radius: 30rpx;
	
		.content {
			padding: 30rpx 0;
			display: flex;
			justify-content: center;
			align-items: center;
	
			.text {
				color: #FFCA3E;
				padding-left: 10rpx;
				width: 80rpx;
				line-height: 1em;
				text-align: right;
				font-size: 28rpx;
			}
		}
	
		.footer {
			padding: 10rpx 0;
			display: flex;
			align-items: center;
			justify-content: center;
		}
	}
}
</style>
